This mod turns DooM^3 into Ultra-Violent Thinking Man's Shooter

Wikipedia states that:

Doom 3 (stylized as D00M^3) is a science fiction survival horror first-person shooter video game

With this mod, the above statement is true.

Overthinked DooM^3 is single-player exclusive and it requires 1.3.1 version of the PC retail game to work.

So, what this mod is all about?

1) This mod fully embraces how much DooM^3 is different from the other entries in the series.

It does not try to make it similar to other DooM games. It stands on its own. It enhances things that make third DooM entry a good game, and it cuts off everything that does not belong to its apocryphic world. It addresses the criticism that DooM^3 received upon release back in 2004, doing everything that’s humanly possible to get rid of the game’s shortcomings.

Its gameplay is exactly opposite to 2016 DooM's. In the best way possible. It's slow, tense and full of adrenaline. If you like tactical shooters, you'll enjoy this one too. If you hate them, don't waste time on this one.

2) This mod is all about tactics.

Whole game has been completely rebalanced. It’s challenging, but fair. You can survive everything as long as your strategy is sound. Your reflexes are as important as your planning. From resource management, through spacial awareness, up to capacity of your memory and ability to do logical thinking – this mod makes use of all of your gaming skills.

3) This mod is all about immersion.

It makes you sink in its world. It changes and enhances hundreds of simple, yet often overlooked game mechanics. It pulls DooM^3 away from the b-movie zone into hard sci-fi realm while retaining its original atmosphere. It extends survival horror elements of the game, making you just another Marine stuck on the shores of hell.

4) This mod is faithful to original iD’s design.

More than that: it makes countless small decisions on the game flow that iD either would not, or could not made back in 2004, unlocking potential that’s been hidden in the game for all those years. It takes great emphasis on finding secrets and exploration, on the overall level design, and on making Mars Base environment believable.

5) This mod is all about balance.

Every weapon serves its unique purpose. There are no weak or strong weapons. Some are more versatile than the others, some are more specialist, but using either one in a wrong scenario means certain death, while using the right one in the right scenario means winning the battle without taking a scratch.

There are no weak or strong monsters. Some are more threatening than the others, but meeting the wrong one in the wrong place means certain death. Learning the patterns of their behaviour and prioritizing them is an essence of a successful gameplay. Never trifle with them.

Overthinked DooM^3 will give you a window of opportunity to learn all this, but it’ll cut you slack only once. There’s no hand holding here. You are the one performing all the takedowns, you are the one surviving all this. No scripted sequence, no pre-programmed event. It’s you and only you. Everything is in your hands.

If you're having trouble with certain situations, or you just find this mod to be too difficult, you may read through this basic survival guide: . Maybe you'll find something helpful in there.

6) This mod is all about tech.

It uses fusion of Denton's Enhanced Doom3 (v2.02) ( ) Sikkmod 1.2 ( ) CED2011's Assets Pack ( ) and Perfected Doom 3 ( ) as a base.

While primarily an immersion mod and not a graphical one, it uses Redux’s ( ) textures and audiologs, Phrozo's ( ) particle effects, HD characters and assets, etc... You should not be disappointed with its looks.


Extract zip archive to your Doom3 folder, and then either launch the game with

doom3.exe +set fs_game overthinked  

or choose it from "Mods" submenu in main menu. Note that it needs 1.3.1 version of the game.

Happy surviving!

Note for folks having trouble with wide-screen monitors:

In the mod folder there's a file called autoexec.cfg
In this file you need to add following lines, edited accordingly to your configuration:

seta r_mode -1
seta r_aspectRatio 1 // (0 = 4:3, 1 = 16:9, 2 = 16:10)
seta r_customHeight 768 // (Your screen height)
seta r_customWidth 1360 // (Your screen width)
If you have distorted camera view, rename Doom3.exe to something else

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First you have to understand one thing. I'ts the very fact that Doom 3 is over an decade (10 years) old and was made with Windows 98/Me/XP compatibility in mind .

Issues on newer systems are inevitable and in the end some are indeed present.

Mostly for ATI/AMD graphic card users. Some will notice graphical glitches other won't be able to run Doom 3 at all.

Below in few simple steps i will introduce you to a simple solution on how to fix those issues.

Step 1:

Go to Doom 3 main directory by either right clicking on the desktop icon and selecting find location/go to location, or by My Computer/This Computer.

There find file named "Doom3.exe" and rename it to "Doom 3.exe".

Step 2:

Create new shortcut to the desktop by right clicking modified file and selecting: Sent to > Desktop.

Or edit all paths in existing shortcut to reflect changes made to the executable file. Add spaces between Doom and 3 in both path boxes. Or just go with the easier first method :P

That's all. Adding one space into a file name fixes most of the issues for ATI/AMD GPU users.

I decided to upgrade to Win10. New official (retail, not internal build) build was released. Works flawlessly. So I wanted to confirm that this method and overall Doom3 runs on Windows 10 without issues.

Basic Strategy Guide

Basic Strategy Guide

Feature 8 comments

Basic hints towards tactical approach in Overthinked DooM 3

Overthinked DooM^3 features list.

Overthinked DooM^3 features list.


Overthinked DooM^3 features list. Moved here from main page.

Attaching lights to the weapons

Attaching lights to the weapons

Client Side Coding Tutorial

Quick guide on using Denton's Enhanced DooM 3 light-attachment system, with Machinegun example.

Fusion SDK compilation tutorial

Fusion SDK compilation tutorial

Client Side Coding Tutorial

Get started with your mod! Overthinked DooM^3 SDK compilation instructions.

Add file RSS Files
Overthinked Doom 3 Graphical Overhaul

Overthinked Doom 3 Graphical Overhaul

Textures 21 comments

A pack to make Overthinked look like a NextGen game. Most features have been improved, like GUI, models, textures, shaders,... in order to greatly enhance...

Language Patch

Language Patch

Patch 6 comments

Patch made by MCGONN ( ), fixes language errors in modified PDAs and adds some quality to found emails contents. Installation...



Full Version 40 comments

Version 2 of the Overthinked DooM^3 mod. Have fun and good luck!

Fusion SDK

Fusion SDK


Overthinked DooM^3 SDK pack, based on GPL release of the game, SikkMod 1.2 and DentonMod 2.02

Comments  (0 - 10 of 220)

Hey punk! CED2011 Here. A youtuber just uploaded a review of the mod ;)
You may want to take a look. Take care

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punk0x29a Creator

THX for the info :)
Overall a positive review, made me happy. Thanks for the youtuber!
Albeit I won't get rid of reloading mechanics, as they make the game more tense and more players like it than not. ;)

Reply Good karma+1 vote

Is it possible to run with Doom 3 BFG edition? Will it work with ROE?

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punk0x29a Creator

Unfortunately - not. It only works with 1.3.1

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If you really want survival horror, play on Nightmare difficulty level. Even on Nightmare, the resources seem abundant.

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Do you think you could make some creepy music in the backrounds of the levels (or at least some levels/parts of levels) like this? [] I think it would improve the creepy atmosphere that you're going for.

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punk0x29a Creator

Waaaay too creepy for me ;) (Linux user, lol)

BTW. I like the lack of music - it's more immersive that way.

Chip Douglas: You know what the trouble about real life is? There's no danger music.

Reply Good karma+1 vote

How I wish to play this mod without the graphical improvement, my laptop can't handle it.
However from what i played i really think its intense! please let me know if I can take out any of the files that change the graphics,
I'd appreciate it.

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So I managed to tweak the mod after days of "overthinking" and fiddling with the scripts till it is playable on my laptop. It still looks better than the vanilla!
Now about the gameplay, I love the difficulty of the mod, im switching back and forth between difficulties. You see I have not finished the game so I'm not familiar with the monsters, yet I feel like a badass with a bring-it-on kinda of attitude. Fights are more intense and thus rewarding. However, I'm typing this at 10:30am I spent the night trying to figure out how to modify the scripts so that weapons reload like in the vanilla. Most of my deaths come from this issue! it breaks the flow of the game, this isn't a tactical game where you snipe enemies and plan your attacks, and it never will be given the level design, how you are always ambushed and the ai charging-to-death behavior.
My issue with reloading isn't that I have to do it manually or that there is no auto switching, I'm getting used to these by now, my issue is with this if*** condition
(ammoAvailable() - ammoInClip() > ammoInClip() )
Why? do you know how annoying the lowammo sound when u try to reload not meeting that condition?
I changed it to this (the original)
( ammoAvailable() > ammoClip ) && ( ammoClip < clip_size )
but everytime I reload it just assumes that I need a full clip size of ammo, so I ran of ammo fast.
If only that could be fixed so I can actually start enjoying the mod instead of tweaking it all night.
Thank you for your effort though, I don't feel like finishing doom 3 without this mod.

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punk0x29a Creator

Hi man!
Thanks for kind words.
I've had to put this condition in because you could reload after shooting, for example, one bullet, loosing the 29 left in the magazine. So it makes more sense to (IMHO) to keep it that way. But I can see that you've noticed it for yourself.
So, so... You'd need to change both the script files and the SDK in order to bring back vanilla reloading. Can't give you anything specific ATM because I'd need to get back to my files and grep through them all night, trying to figure out what have I done :D All and all, shame on me for not using modern software engineering methods :P
As for the enemies AI - yeah, I'm aware of this... Too bad nothing can be done about it... I think I did what I could with my skillset, given what I had to work with. In the future, if possible, I'd also like to tweak the cutscenes to make narration more HalfLife-like. I don't know all that much about AI to make monsters smarter, unfortunately... :( I hope someone, one day, would make that change. It would be awesome.

Thanks again, and good luck!

Reply Good karma+1 vote
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Highest Rated (2 agree) 10/10

Overthinked Doom^3 is a brilliant mod. It slightly shifts some of the mechanics of normal gameplay--for instance, if you reload, any remaining ammunition in the magazine you just dropped stays in that magazine. It's gone. Already, you have to start thinking about your reloads--when do I drop this mag? Can I still use it? Is it worth losing half a magazine to put a full one in for this next firefight? Oh, and you have to load the shells into the shotgun, one by one. As in, you hit R eight times…

Apr 19 2015 by Nicognition

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